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61,005 resultsShowing papers similar to Polystyrene microplastics removal from aqueous solutions by magnetic iron nanoparticles
ClearAdsorptive removal of micron-sized polystyrene particles using magnetic iron oxide nanoparticles
Researchers demonstrated that magnetic iron oxide nanoparticles can effectively adsorb and remove micron-sized polystyrene microplastics from water, offering a magnetically recoverable approach to microplastic remediation.
Removal of polystyrene nanoplastics from aqueous solutions by a novel magnetic zeolite adsorbent
Researchers synthesized a magnetic zeolite adsorbent using co-precipitation and tested it for removal of polystyrene nanoplastics from water, achieving a maximum adsorption capacity of 34.2 milligrams per gram. Iron oxide functional groups on the zeolite surface drove nanoplastic capture via electrostatic attraction, complexation, and pi-pi conjugation, and the material could be magnetically separated for reuse.
Efficient magnetic adsorption of polystyrene nanoplastic from aqueous solutions by eco-friendly Fe3O4 nanoparticles: Removal, kinetic and isotherm modeling studies
Researchers synthesized iron oxide magnetic nanoparticles using pine resin extract (a green chemistry approach) and demonstrated they remove polystyrene nanoplastics from water with 95–99% efficiency via magnetic separation, achieving an adsorption capacity of 454 mg/g through a monolayer chemisorption process.
Removal of microplastics from water by magnetic nano-Fe3O4
Researchers developed a method for removing microplastics from water using magnetic iron oxide nanoparticles that attach to plastic surfaces, allowing the particles to be pulled out with a magnet. The technique achieved removal rates above 80% for common microplastic types in environmental water samples including river water, sewage, and seawater, suggesting a practical approach for water treatment.
Development of a Fast and Efficient Strategy Based on Nanomagnetic Materials to Remove Polystyrene Spheres from the Aquatic Environment
Researchers developed magnetic nanoparticles coated with silver and an amino acid that can remove polystyrene microplastics from water with 100% efficiency in just 15 minutes. The approach works at room temperature and neutral pH, offering a fast and practical strategy for cleaning microplastic-contaminated water using simple magnetic separation.
Effective removal of Micro- and nanoplastics from water using Iron oxide nanoparticles: Mechanisms and optimization
Researchers developed a magnetic separation method using iron oxide nanoparticles to remove micro- and nanoplastics from water, achieving up to 95% removal efficiency within just 20 minutes. The technique works through hydrophobic interactions between the iron oxide particles and plastic surfaces, and was particularly effective for smaller nanoplastics. The method offers a relatively simple, rapid, and cost-effective approach to filtering plastic particles from contaminated water.
Microplastics and other pollutants in the aquatic environment: study of interactions and new removal strategies
Researchers evaluated iron magnetic nanoparticles (MNPs) with varying surface modifications -- bare Fe3O4, TEOS-coated, and TEOS+MPS-coated -- for removing four types of microplastics (Nylon 6, PTFE at two sizes, and PMMA) from water, assessing how surface chemistry and synthesis time affect removal efficiency.
Testing an Iron Oxide Nanoparticle-Based Method for Magnetic Separation of Nanoplastics and Microplastics from Water
Researchers tested iron oxide nanoparticles with hydrophobic coatings as a method for magnetically separating micro- and nanoplastics from water. The approach achieved 100% removal of larger microplastics and nearly 90% removal of nanoplastics using a simple permanent magnet, suggesting a viable method for water purification and environmental monitoring.
Exploring the effective adsorption of polystyrene microplastics from aqueous solution with magnetically separable nickel/reduced graphene oxide (Ni/rGO) nanocomposite
Researchers developed a magnetic nanocomposite material that can effectively remove polystyrene microplastics from water and be easily separated using a magnet for reuse. This technology could help reduce microplastic contamination in water supplies, potentially lowering human exposure to these tiny plastic particles through drinking water.
Remediation strategies for micro/nanoplastic pollution using magnetic nanomaterials
This review surveys recent developments in using magnetic nanomaterials, such as iron oxide nanoparticles and magnetic composites, to remove micro- and nanoplastics from water and soil. These materials can capture plastic particles through adsorption, help clump them together for removal, or even break them down, and they can be magnetically recovered for reuse. The study highlights that magnetic nanomaterials offer a promising approach for cleaning up plastic pollution, though challenges remain in scaling up for real-world use.
Magnetic Extraction of Microplastics from Environmental Samples
A magnetic extraction method was developed using hydrophobic iron nanoparticles that bind to plastic surfaces, achieving 92% recovery of 10–20 μm polyethylene and polystyrene beads and 84–93% recovery of six polymer types from seawater and sediment. The method offers a practical, adaptable approach to extracting microplastics from complex environmental matrices without the limitations of density-based separation.
Removal and Degradation of Microplastics Using the Magnetic and Nanozyme Activities of Bare Iron Oxide Nanoaggregates
Researchers developed bare iron oxide nanoaggregates that both remove and catalytically degrade common microplastics with nearly 100% efficiency, achieving full extraction at just 1% of the microplastic mass through combined magnetic and nanozyme activities.
Effect of aggregation behavior on microplastic removal by magnetic Fe3O4 nanoparticles
Researchers investigated how magnetic iron oxide nanoparticles can remove nanoscale microplastics from water. They found that 83 to 93 percent of the plastic particles could be captured within one hour, with removal efficiency strongly linked to how the nanoparticles and plastics clump together. The study shows that water acidity and salt levels significantly influence the process, offering practical guidance for deploying magnetic cleanup technologies.
Destabilization of polystyrene nanoplastics with different surface charge and particle size by Fe electrocoagulation
Researchers tested iron electrocoagulation for removing nanoplastics from water and found it removed up to 85% of negatively charged polystyrene nanoparticles at neutral pH, with removal efficiency declining for larger particles and dropping sharply for positively charged nanoplastics due to insufficient iron floc formation.
Magnetic Removal of Micro‐ and Nanoplastics from Water—from 100 nm to 100 µm Debris Size
Researchers demonstrated a magnetic method for removing micro- and nanoplastics from water using iron oxide nanoparticles that attract oppositely charged plastic particles. The technique was effective across a wide size range, from 100 nanometers to 100 micrometers, and worked with multiple plastic types. The study suggests that magnetic removal could help address the gap in current wastewater treatment, which struggles to capture the smallest plastic particles.
Efficient magnetic capture of PE microplastic from water by PEG modified Fe3O4 nanoparticles: Performance, kinetics, isotherms and influence factors
Researchers developed PEG-modified Fe3O4 magnetic nanoparticles that efficiently capture polyethylene microplastics from water with a maximum adsorption capacity of 2,203 mg/g, maintaining high removal efficiency across varying environmental conditions.
Magnetic labelling and extraction of micrometer-sized microplastics from soil
Researchers developed a magnetic labeling and extraction method for micrometer-sized microplastics from soil, exploiting the glass transition of polystyrene by heating particles to embed iron oxide nanoparticles on their surface, allowing efficient magnetic separation of small MPs from complex soil matrices.
Enhanced removal of aged and differently functionalized polystyrene nanoplastics using ball-milled magnetic pinewood biochars
Researchers developed magnetic biochars from pinewood using ball-milling with iron oxide nanoparticles, achieving highly effective removal of various functionalized and aged polystyrene nanoplastics from water with easy magnetic separation and reusability.
Removal and Degradation of Microplastics Using the Magnetic and Nanozyme Activities of Bare Iron Oxide Nanoaggregates
Researchers demonstrated that hydrophilic bare Fe3O4 nanoaggregates can magnetically remove five common microplastics — including HDPE, PP, PVC, PS, and PET — at just 1% of microplastic mass via hydrogen bonding, and subsequently degrade the captured plastics through the nanoaggregates' peroxidase-like nanozyme activity in a single integrated process.
Plastics adsorption and removal by 2D ultrathin iron oxide nanodiscs: From micro to nano
Researchers developed ultra-thin magnetic iron oxide nanodiscs for removing micro- and nanoplastics from water. The study found that these nanodiscs achieved high adsorption capacity through electrostatic and magnetic forces, and maintained over 90% removal efficiency after five reuse cycles, offering a cost-effective approach for treating plastic-contaminated wastewater.
Adsorption Ability of Soft Magnetic FeCo Alloys for Microplastics
Researchers synthesized soft magnetic FeCo alloy nanoparticles loaded onto carboxymethyl cellulose and systematically characterized their ability to adsorb polyethylene microplastics from water, finding effective magnetic-assisted removal that could be applied for environmental microplastic remediation.
Preparation of magnetic Janus microparticles for the rapid removal of microplastics from water
Researchers developed a new type of magnetic particle that can quickly remove microplastics from water, achieving 92% removal of polystyrene and 61% removal of polyethylene in just 20 minutes. These magnetic Janus microparticles work by attracting plastic through multiple mechanisms and can be easily collected with a magnet for reuse. This technology could be a practical tool for cleaning microplastics from drinking water and wastewater, helping reduce human exposure.
Experimental investigation of inertial fibres and disks in a turbulent boundary layer
This study investigated the use of magnetic iron oxide nanoparticles as a capture technology for removing microplastics from water, achieving over 90% removal efficiency for polystyrene and polyethylene particles using an external magnetic field. Recyclability of the sorbent was demonstrated over 10 cycles.
A Sustainable Method for Removal of the Full Range of Liquid and Solid Hydrocarbons from Water Including Up‐ and Recycling
Researchers developed iron oxide nanoparticles coated with alkyl phosphonic acid that can bind to a wide range of hydrocarbons — from dissolved oils to plastic particles — regardless of molecular weight or size, and can then be magnetically separated from water. The approach offers a promising tool for removing plastic pollution from wastewater, including microplastics that are too small for conventional filtration to capture.